Last updated: March 2, 2024
The weather in Castanhal, Brazil, during January is characterized by an average temperature of 26°C (79°F). Highs can soar to 33°C (92°F), while lows may dip to 22°C (72°F). Typically, the humidity level in Castanhal throughout January hovers around 89%.
Minimum temperature
Average temperature
Maximum temperature
Humidity
In January, Castanhal averages 265 mm (10.4 inches) of rainfall, typically over the course of 24 rainy days. The month enjoys an average of 12 hours 10 minutes of daylight, with the sun shining for approximately 7 hours 41 minutes each day. Additionally, there is a 19% probability of sunny days during this period.
Precipitation
Rainy days
Sunshine hours
Chance of sun
In January, the UV Index in Castanhal reaches a maximum of 14, indicating a level of Extreme exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 10 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 1 | 2 | 5 | 9 | 12 | 14 | 14 | 11 | 7 | 4 | 1 | 1 | 0 |
| Exposure | Low | Moderate | VeryHigh | Extreme | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 15 min | 10 min | 25 min | 30 min | 45 min | ||||||